S&P 500 Retreats as AI Speculation Deflates with Arrival of Lower Cost Competition

The S&P 500 (Index: SPX ) retreated 1.5% from its previous week's close to end the week at 7,457.69 . Much of the market's downward movement came in response to a growing awareness among investors of the high cost of utilizing the most advanced AI systems over the last several weeks. The shift in sentiment has largely capped the upward movement of these stocks despite many having just reported…